Air Quality in San Diego, Costa Rica
Rain
17.3°C · 97.1% humidity
17.3°
Feels 17.3°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
San Diego's air quality — share it
AQI Forecast
25
1pm
25
25
25
4pm
25
25
25
7pm
25
25
25
10pm
25
25
25
1am
25
25
25
4am
25
25
25
7am
25
24
24
10am
24
24
Air Quality Index Trend
45h · 1 stnSan Diego's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
97.1%
Humidity
16.1 km/h
Wind NE
1012.7 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.93 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for San Diego?
Temperature & Precipitation
PM2.5 Trend
45h · 1 stationPM2.55.93 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
Station readings (1 station within 25 km)
5.93
Median
5.93
Average
5.93
Low
5.93
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -0.0
What is the 7-day forecast for San Diego?
09-05
21.7° 15.5°
4.63 mm
09-06
17.3° 15.3°
8.69 mm
09-07
21.0° 15.3°
9.5 mm
09-08
20.7° 15.7°
7.69 mm
09-09
19.3° 15.6°
15.69 mm
09-10
18.5° 15.3°
6.81 mm
09-11
17.2° 15.3°
7.69 mm
Both models agree
Avg diff: 1.5°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T22:42 UTC.